Confirmed this is happening in 141 RC build 2. Also in testing I noticed: the issue doesn't appear when on a fresh install, everything appeared normally. When I changed the UI language is when the issue appeared, and it persisted if I changed the UI language back to the original. Closing Firefox and opening again the issue seemed to stopped appearing, even when changing languages/adding new language.
Bug 1978003 Comment 5 Edit History
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Confirmed this is happening in 141 RC build 2. Also in testing I noticed: the issue doesn't appear when on a fresh install, everything appeared normally. When I changed the UI language is when the issue appeared, and it persisted if I changed the UI language back to the original. Closing Firefox and opening again the issue seemed to stopped appearing, even when changing languages/adding new language. Edit: Testing again 30 minutes later and I'm able to get the bug to appear again by changing the UI language.